281 lines
10 KiB
Plaintext
281 lines
10 KiB
Plaintext
.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28)
|
|
.\"
|
|
.\" Standard preamble:
|
|
.\" ========================================================================
|
|
.de Sp \" Vertical space (when we can't use .PP)
|
|
.if t .sp .5v
|
|
.if n .sp
|
|
..
|
|
.de Vb \" Begin verbatim text
|
|
.ft CW
|
|
.nf
|
|
.ne \\$1
|
|
..
|
|
.de Ve \" End verbatim text
|
|
.ft R
|
|
.fi
|
|
..
|
|
.\" Set up some character translations and predefined strings. \*(-- will
|
|
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
|
|
.\" double quote, and \*(R" will give a right double quote. \*(C+ will
|
|
.\" give a nicer C++. Capital omega is used to do unbreakable dashes and
|
|
.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
|
|
.\" nothing in troff, for use with C<>.
|
|
.tr \(*W-
|
|
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
|
|
.ie n \{\
|
|
. ds -- \(*W-
|
|
. ds PI pi
|
|
. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
|
|
. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
|
|
. ds L" ""
|
|
. ds R" ""
|
|
. ds C` ""
|
|
. ds C' ""
|
|
'br\}
|
|
.el\{\
|
|
. ds -- \|\(em\|
|
|
. ds PI \(*p
|
|
. ds L" ``
|
|
. ds R" ''
|
|
. ds C`
|
|
. ds C'
|
|
'br\}
|
|
.\"
|
|
.\" Escape single quotes in literal strings from groff's Unicode transform.
|
|
.ie \n(.g .ds Aq \(aq
|
|
.el .ds Aq '
|
|
.\"
|
|
.\" If the F register is turned on, we'll generate index entries on stderr for
|
|
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
|
|
.\" entries marked with X<> in POD. Of course, you'll have to process the
|
|
.\" output yourself in some meaningful fashion.
|
|
.\"
|
|
.\" Avoid warning from groff about undefined register 'F'.
|
|
.de IX
|
|
..
|
|
.nr rF 0
|
|
.if \n(.g .if rF .nr rF 1
|
|
.if (\n(rF:(\n(.g==0)) \{
|
|
. if \nF \{
|
|
. de IX
|
|
. tm Index:\\$1\t\\n%\t"\\$2"
|
|
..
|
|
. if !\nF==2 \{
|
|
. nr % 0
|
|
. nr F 2
|
|
. \}
|
|
. \}
|
|
.\}
|
|
.rr rF
|
|
.\"
|
|
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
|
|
.\" Fear. Run. Save yourself. No user-serviceable parts.
|
|
. \" fudge factors for nroff and troff
|
|
.if n \{\
|
|
. ds #H 0
|
|
. ds #V .8m
|
|
. ds #F .3m
|
|
. ds #[ \f1
|
|
. ds #] \fP
|
|
.\}
|
|
.if t \{\
|
|
. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
|
|
. ds #V .6m
|
|
. ds #F 0
|
|
. ds #[ \&
|
|
. ds #] \&
|
|
.\}
|
|
. \" simple accents for nroff and troff
|
|
.if n \{\
|
|
. ds ' \&
|
|
. ds ` \&
|
|
. ds ^ \&
|
|
. ds , \&
|
|
. ds ~ ~
|
|
. ds /
|
|
.\}
|
|
.if t \{\
|
|
. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
|
|
. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
|
|
. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
|
|
. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
|
|
. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
|
|
. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
|
|
.\}
|
|
. \" troff and (daisy-wheel) nroff accents
|
|
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
|
|
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
|
|
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
|
|
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
|
|
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
|
|
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
|
|
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
|
|
.ds ae a\h'-(\w'a'u*4/10)'e
|
|
.ds Ae A\h'-(\w'A'u*4/10)'E
|
|
. \" corrections for vroff
|
|
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
|
|
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
|
|
. \" for low resolution devices (crt and lpr)
|
|
.if \n(.H>23 .if \n(.V>19 \
|
|
\{\
|
|
. ds : e
|
|
. ds 8 ss
|
|
. ds o a
|
|
. ds d- d\h'-1'\(ga
|
|
. ds D- D\h'-1'\(hy
|
|
. ds th \o'bp'
|
|
. ds Th \o'LP'
|
|
. ds ae ae
|
|
. ds Ae AE
|
|
.\}
|
|
.rm #[ #] #H #V #F C
|
|
.\" ========================================================================
|
|
.\"
|
|
.IX Title "EVP_MAC-KMAC 7ossl"
|
|
.TH EVP_MAC-KMAC 7ossl "2024-01-30" "3.2.1" "OpenSSL"
|
|
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
|
|
.\" way too many mistakes in technical documents.
|
|
.if n .ad l
|
|
.nh
|
|
.SH "NAME"
|
|
EVP_MAC\-KMAC, EVP_MAC\-KMAC128, EVP_MAC\-KMAC256
|
|
\&\- The KMAC EVP_MAC implementations
|
|
.SH "DESCRIPTION"
|
|
.IX Header "DESCRIPTION"
|
|
Support for computing \s-1KMAC\s0 MACs through the \fB\s-1EVP_MAC\s0\fR \s-1API.\s0
|
|
.SS "Identity"
|
|
.IX Subsection "Identity"
|
|
These implementations are identified with one of these names and
|
|
properties, to be used with \fIEVP_MAC_fetch()\fR:
|
|
.ie n .IP """\s-1KMAC\-128"", \s0""provider=default"" or ""provider=fips""" 4
|
|
.el .IP "``\s-1KMAC\-128'', \s0``provider=default'' or ``provider=fips''" 4
|
|
.IX Item "KMAC-128, provider=default or provider=fips"
|
|
.PD 0
|
|
.ie n .IP """\s-1KMAC\-256"", \s0""provider=default"" or ""provider=fips""" 4
|
|
.el .IP "``\s-1KMAC\-256'', \s0``provider=default'' or ``provider=fips''" 4
|
|
.IX Item "KMAC-256, provider=default or provider=fips"
|
|
.PD
|
|
.SS "Supported parameters"
|
|
.IX Subsection "Supported parameters"
|
|
The general description of these parameters can be found in
|
|
\&\*(L"\s-1PARAMETERS\*(R"\s0 in \s-1\fIEVP_MAC\s0\fR\|(3).
|
|
.PP
|
|
All these parameters (except for \*(L"block-size\*(R") can be set with
|
|
\&\fIEVP_MAC_CTX_set_params()\fR.
|
|
Furthermore, the \*(L"size\*(R" parameter can be retrieved with
|
|
\&\fIEVP_MAC_CTX_get_params()\fR, or with \fIEVP_MAC_CTX_get_mac_size()\fR.
|
|
The length of the \*(L"size\*(R" parameter should not exceed that of a \fBsize_t\fR.
|
|
Likewise, the \*(L"block-size\*(R" parameter can be retrieved with
|
|
\&\fIEVP_MAC_CTX_get_params()\fR, or with \fIEVP_MAC_CTX_get_block_size()\fR.
|
|
.ie n .IP """key"" (\fB\s-1OSSL_MAC_PARAM_KEY\s0\fR) <octet string>" 4
|
|
.el .IP "``key'' (\fB\s-1OSSL_MAC_PARAM_KEY\s0\fR) <octet string>" 4
|
|
.IX Item "key (OSSL_MAC_PARAM_KEY) <octet string>"
|
|
Sets the \s-1MAC\s0 key.
|
|
Setting this parameter is identical to passing a \fIkey\fR to \fIEVP_MAC_init\fR\|(3).
|
|
The length of the key (in bytes) must be in the range 4...512.
|
|
.ie n .IP """custom"" (\fB\s-1OSSL_MAC_PARAM_CUSTOM\s0\fR) <octet string>" 4
|
|
.el .IP "``custom'' (\fB\s-1OSSL_MAC_PARAM_CUSTOM\s0\fR) <octet string>" 4
|
|
.IX Item "custom (OSSL_MAC_PARAM_CUSTOM) <octet string>"
|
|
Sets the customization string.
|
|
It is an optional value with a length of at most 512 bytes, and is
|
|
empty by default.
|
|
.ie n .IP """size"" (\fB\s-1OSSL_MAC_PARAM_SIZE\s0\fR) <unsigned integer>" 4
|
|
.el .IP "``size'' (\fB\s-1OSSL_MAC_PARAM_SIZE\s0\fR) <unsigned integer>" 4
|
|
.IX Item "size (OSSL_MAC_PARAM_SIZE) <unsigned integer>"
|
|
Sets the \s-1MAC\s0 size.
|
|
By default, it is 32 for \f(CW\*(C`KMAC\-128\*(C'\fR and 64 for \f(CW\*(C`KMAC\-256\*(C'\fR.
|
|
.ie n .IP """block-size"" (\fB\s-1OSSL_MAC_PARAM_BLOCK_SIZE\s0\fR) <unsigned integer>" 4
|
|
.el .IP "``block-size'' (\fB\s-1OSSL_MAC_PARAM_BLOCK_SIZE\s0\fR) <unsigned integer>" 4
|
|
.IX Item "block-size (OSSL_MAC_PARAM_BLOCK_SIZE) <unsigned integer>"
|
|
Gets the \s-1MAC\s0 block size.
|
|
It is 168 for \f(CW\*(C`KMAC\-128\*(C'\fR and 136 for \f(CW\*(C`KMAC\-256\*(C'\fR.
|
|
.ie n .IP """xof"" (\fB\s-1OSSL_MAC_PARAM_XOF\s0\fR) <integer>" 4
|
|
.el .IP "``xof'' (\fB\s-1OSSL_MAC_PARAM_XOF\s0\fR) <integer>" 4
|
|
.IX Item "xof (OSSL_MAC_PARAM_XOF) <integer>"
|
|
The \*(L"xof\*(R" parameter value is expected to be 1 or 0. Use 1 to enable \s-1XOF\s0 mode.
|
|
The default value is 0.
|
|
.PP
|
|
The \*(L"custom\*(R" parameter must be set as part of or before the \fIEVP_MAC_init()\fR call.
|
|
The \*(L"xof\*(R" and \*(L"size\*(R" parameters can be set at any time before \fIEVP_MAC_final()\fR.
|
|
The \*(L"key\*(R" parameter is set as part of the \fIEVP_MAC_init()\fR call, but can be
|
|
set before it instead.
|
|
.SH "EXAMPLES"
|
|
.IX Header "EXAMPLES"
|
|
.Vb 2
|
|
\& #include <openssl/evp.h>
|
|
\& #include <openssl/params.h>
|
|
\&
|
|
\& static int do_kmac(const unsigned char *in, size_t in_len,
|
|
\& const unsigned char *key, size_t key_len,
|
|
\& const unsigned char *custom, size_t custom_len,
|
|
\& int xof_enabled, unsigned char *out, int out_len)
|
|
\& {
|
|
\& EVP_MAC_CTX *ctx = NULL;
|
|
\& EVP_MAC *mac = NULL;
|
|
\& OSSL_PARAM params[4], *p;
|
|
\& int ret = 0;
|
|
\& size_t l = 0;
|
|
\&
|
|
\& mac = EVP_MAC_fetch(NULL, "KMAC\-128", NULL);
|
|
\& if (mac == NULL)
|
|
\& goto err;
|
|
\& ctx = EVP_MAC_CTX_new(mac);
|
|
\& /* The mac can be freed after it is used by EVP_MAC_CTX_new */
|
|
\& EVP_MAC_free(mac);
|
|
\& if (ctx == NULL)
|
|
\& goto err;
|
|
\&
|
|
\& /*
|
|
\& * Setup parameters required before calling EVP_MAC_init()
|
|
\& * The parameters OSSL_MAC_PARAM_XOF and OSSL_MAC_PARAM_SIZE may also be
|
|
\& * used at this point.
|
|
\& */
|
|
\& p = params;
|
|
\& *p++ = OSSL_PARAM_construct_octet_string(OSSL_MAC_PARAM_KEY,
|
|
\& (void *)key, key_len);
|
|
\& if (custom != NULL && custom_len != 0)
|
|
\& *p++ = OSSL_PARAM_construct_octet_string(OSSL_MAC_PARAM_CUSTOM,
|
|
\& (void *)custom, custom_len);
|
|
\& *p = OSSL_PARAM_construct_end();
|
|
\& if (!EVP_MAC_CTX_set_params(ctx, params))
|
|
\& goto err;
|
|
\&
|
|
\& if (!EVP_MAC_init(ctx))
|
|
\& goto err;
|
|
\&
|
|
\& /*
|
|
\& * Note: the following optional parameters can be set any time
|
|
\& * before EVP_MAC_final().
|
|
\& */
|
|
\& p = params;
|
|
\& *p++ = OSSL_PARAM_construct_int(OSSL_MAC_PARAM_XOF, &xof_enabled);
|
|
\& *p++ = OSSL_PARAM_construct_int(OSSL_MAC_PARAM_SIZE, &out_len);
|
|
\& *p = OSSL_PARAM_construct_end();
|
|
\& if (!EVP_MAC_CTX_set_params(ctx, params))
|
|
\& goto err;
|
|
\&
|
|
\& /* The update may be called multiple times here for streamed input */
|
|
\& if (!EVP_MAC_update(ctx, in, in_len))
|
|
\& goto err;
|
|
\& if (!EVP_MAC_final(ctx, out, &l, out_len))
|
|
\& goto err;
|
|
\& ret = 1;
|
|
\& err:
|
|
\& EVP_MAC_CTX_free(ctx);
|
|
\& return ret;
|
|
\& }
|
|
.Ve
|
|
.SH "SEE ALSO"
|
|
.IX Header "SEE ALSO"
|
|
\&\fIEVP_MAC_CTX_get_params\fR\|(3), \fIEVP_MAC_CTX_set_params\fR\|(3),
|
|
\&\*(L"\s-1PARAMETERS\*(R"\s0 in \s-1\fIEVP_MAC\s0\fR\|(3), \s-1\fIOSSL_PARAM\s0\fR\|(3)
|
|
.SH "COPYRIGHT"
|
|
.IX Header "COPYRIGHT"
|
|
Copyright 2018\-2023 The OpenSSL Project Authors. All Rights Reserved.
|
|
.PP
|
|
Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file \s-1LICENSE\s0 in the source distribution or at
|
|
<https://www.openssl.org/source/license.html>.
|